Partially removing text from the title field

I regularly buy dance music downloads from 7digital, and the title tag always contains the remix name twice, once inside brackets and again outside the brackets, e.g.

%title% = Children (Dream Version) Dream Version

Can somebody please help me create an action to remove everything after the )

Thanks!

Try Convert>Tag-Tag or an action of the type "Format value" for TITLE
Format string: $regexp(%title%,'(.*\)).*',$1)

Worked like a charm. Thanks very much!